You have isolated two temperature-sensitive mutations in phage l that you suspect may be in the same gene. These phage mutants are called ts-1 and ts-2. Each mutant will form plaques at 35˚C but not at 42˚C. You cross ts^-1 to ts^-2 phage by coinfecting E. coli at the permissive temperature of 35˚C. When the resulting phage lysate is plated at 35˚C you count 10,000 plaques per ml of phage lysate, but when the same phage lysate is plated at 42˚C, there are only 80 plaques per ml.  

If the total size of the phage is 5 x 10⁴ bp and the total genetic map length of the phage is 100 m.u., about how far apart are the mutations in base pairs?

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#Question id: 18991

#Unit 13. Methods in Biology

Which of the following is not true about High pressure liquid chromatography (HPLC)? 

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#Question id: 18997

#Unit 13. Methods in Biology

DDT primarily can be analysed by 

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#Question id: 23031

#Unit 12. Applied Biology

Which of the following portion of some xenobiotic can be traced back to a biological origin to see if these substances were produced oil, natural gas or coal?

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#Question id: 30076

#Unit 2. Cellular Organization

Direct repeats in the IS element are present __________

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#Question id: 29534

#Unit 6. System Physiology – Plant

Flg22 activates NADPH oxidases for the production of ROS are encoded by 10 respiratory burst oxidase homolog